Embossed film assembly having pastel holographic security features

Abstract

An embossed film assembly is provided that includes a substrate and at least one security layer formed from a polymer layer having an image formed therein and a high refractive index (HRI) layer on the polymer layer. The polymer layer and the HRI layer form a holographic security feature on the substrate. The image in the polymer layer is formed from low frequency gratings configured to generate a pastel color in the holographic security feature.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Application No. 63 / 011,693, which was filed 17 Apr. 2020, and the entire disclosure of which is incorporated herein by reference.BACKGROUNDTechnical Field[0002]The subject matter described herein relates to embossed film assemblies having holographic security features.Discussion of Art[0003]Security documents can have security features used to ensure the veracity of the documents. Level 1 security features are features that do not require additional equipment to verify the veracity of the documents. These types of security features may be required for many security documents as the security features enable the authenticity of the document to be quickly and easily checked in a location where access to equipment required for level 2 or 3 security features may not be available.[0004]One known level 1 security feature is an optically variable device, such as a feature that changes visual ap...

AI Technical Summary

Benefits of technology

This patent describes a special film that can be used to create secure labels or signs. It consists of a layer of plastic with a special image formed on it, and another layer of plastic that adds a special hologram-like security feature. This hologram is made from low-frequency gratings that create a pastel color. When this film is used to create a label or sign, it can be easily identified and verified without needing to use high-speed technology or special equipment. This makes it a great choice for creating secure labels or signs.

Problems solved by technology

If the high-end fraudster has access to the same or similar equipment, the security feature may be replicated, thus reducing the overall effectiveness of the feature in the secure document.

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